39409930 has 32 divisors (see below), whose sum is σ = 82963584. Its totient is φ = 13196736.

The previous prime is 39409913. The next prime is 39409939. The reversal of 39409930 is 3990493.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 39409930.

It is not an unprimeable number, because it can be changed into a prime (39409939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3537 + ... + 9556.

It is an arithmetic number, because the mean of its divisors is an integer number (2592612).

Almost surely, 2^39409930 is an apocalyptic number.

39409930 is an abundant number, since it is smaller than the sum of its proper divisors (43553654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39409930 is a wasteful number, since it uses less digits than its factorization.

39409930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13150.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 39409930 is about 6277.7328710292. The cubic root of 39409930 is about 340.3051758265.

The spelling of 39409930 in words is "thirty-nine million, four hundred nine thousand, nine hundred thirty".